dynamics, articulation confusing
Dynamics and articulation do not follow what-you-see-is-what-you-hear. When you first add dynamics, it plays back as expected. However, as soon as you add notes or do editing, all bets are off. It is hard to predict where the dynamics are still applied and where they need to be re-applied. I'm not sure if this is a bug or a feature request, but I'd much prefer if the effect of dynamics/articulation was easier to predict.
Comments
The issue with dynamics is known, and seems to already be fixed for 2.0. Note also that even in 1.X, the inconsistency goes away as soon as you reload the score. So there is never actually a need to reapply dynamics at all.
Not sure what your issue is with articulation, though. Only a few playback at all, but they should do so consistently. A few more will work with playback for 2.0. But do keep in mind, playback is definitely secondary in importance in MuseScore- notation itself is the main purpose.